Steel Creusabro 4000 QT-HEAVY
Heat-treated state
Heavy plate for thick liners and crusher parts; mass-effect gives slightly lower hardness and mid-thickness toughness than thin gauges.
Values for the QT-HEAVY condition
Other Creusabro 4000 tempers and conditions
Creusabro 4000 is listed in 2 conditions; see the grade overview at Creusabro 4000.
- QT-HEAVY
- QT
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
QT-HEAVYThis page quenched & tempered plate above ~50 mm thickness | Heavy plate for thick liners and crusher parts; mass-effect gives slightly lower hardness and mid-thickness toughness than thin gauges. | 930 | 1,200 | 13 | 41 HRC | 7.2 % IACS |
QTDefault Quenched and tempered | Standard mill condition for almost all Creusabro 4000 quarto plate — pick for general abrasion + impact wear parts (liners, buckets, chutes, screens). | 1,000 | 1,250 | 12 | 42 HRC | — |
What is Creusabro 4000 QT-HEAVY?
Creusabro 4000 QT-HEAVY is Creusabro 4000 heat treated to QT-HEAVY — heavy plate for thick liners and crusher parts; mass-effect gives slightly lower hardness and mid-thickness toughness than thin gauges. Creusabro 4000 QT-HEAVY has a yield strength of 930 MPa (135 ksi) and a tensile strength of 1,200 MPa (174 ksi) — stronger than 90% of steel grades. Elongation at break is 13% and the elastic modulus is 205 GPa (29.7 Msi). Creusabro 4000 QT-HEAVY has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F). QT is the default condition FabDigit quotes; QT-HEAVY is available on request or by drawing note.
Advantages
- High strength — 930 MPa (135 ksi), better than 90% of steel grades
Limitations
- Difficult to machine — 27/100, worse than 92% of steel grades
- Hard to polish — 45/100, worse than 84% of steel grades
- Limited ductility — 13%, worse than 78% of steel grades
Creusabro 4000 QT-HEAVY properties
Typical room-temperature values for Creusabro 4000 QT-HEAVY; 22 are specific to this condition. Other listed values are Creusabro 4000 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
Creusabro 4000 QT-HEAVY has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F).
Mechanical16
Creusabro 4000 QT-HEAVY has a yield strength of 930 MPa (135 ksi) and a tensile strength of 1,200 MPa (174 ksi) — stronger than 90% of steel grades. Elongation at break is 13% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
Creusabro 4000 QT-HEAVY is rated for continuous service to 400°C (752 °F). It conducts heat at 36 W/m·K (20.8 BTU/hr·ft·°F), worse than 73% of steel grades. Thermal expansion is 12.5 µm/m·K (6.94 µin/in·°F).
Electrical2
Creusabro 4000 QT-HEAVY has an electrical resistivity of 2.4×10⁻⁷ Ω·m.
Chemical & Environmental2
Corrosion resistance is poor (15/100), better than 75% of steel grades.
Sustainability4
Producing a kilogram of Creusabro 4000 QT-HEAVY takes about 32 MJ of energy and emits 2.3 kg of CO₂ — more than 70% of steel grades. Typical recycled content is 30%.
Manufacturability6
Creusabro 4000 QT-HEAVY's machinability is poor (27/100, worse than 92% of steel grades); weldability good (55/100); formability fair (35/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Creusabro 4000 QT-HEAVY
Is Creusabro 4000 easy to machine?
Machine with rigid setups and coated carbide or CBN at low feeds/speeds; drilling needs high thrust and coolant, and the material work-hardens locally, so avoid dwelling and prefer plasma/laser cutting plus grinding where possible.
Can Creusabro 4000 be welded?
Weldable with low-hydrogen MMA/MAG/FCAW consumables; carbon equivalent is moderate so no preheat is usually needed up to ~30 mm, above that preheat 100–150 °C, keep interpass ≤250 °C, no post-weld heat treatment (it would soften the plate).
Can Creusabro 4000 be formed, bent or molded?
Cold bendable with bend radius about 3–4×t transverse to rolling direction (better ductility than conventional 400 HB plate); hot forming and full re-quench are not recommended as the dual-phase structure would be lost.
What surface finishes work on Creusabro 4000?
Descale/blast then shop primer or epoxy paint; no anodizing (ferrous). Flame/plasma cut edges should be ground before welding or bending to remove the hardened cut zone.
Creusabro 4000 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Cproprietary Industeel analysis, typical values | ≤ 0.2 | 0.2 |
| Mn | ≤ 1.6 | 1.6 |
| Si | ≤ 0.6 | 0.4 |
| Cr | ≤ 1.9 | 1.9 |
| Ni | ≤ 0.3 | 0.2 |
| Mo | ≤ 0.25 | 0.2 |
| Tifine Ti carbides for micro-abrasion resistance | ≤ 0.08 | 0.06 |
| Slow-S for toughness/formability | ≤ 0.01 | 0 |
| P | ≤ 0.02 | 0.01 |
| Fe | balance | — |
Creusabro 4000 QT-HEAVY — frequently asked
What is Creusabro 4000 QT-HEAVY used for?
Creusabro 4000 QT-HEAVY is typically used for dump truck liners, screening equipment and high-impact abrasion parts. In short: work-hardening dual-phase plate; impact plus abrasion resistance; 400 °C service capability.
What is the yield strength of Creusabro 4000 QT-HEAVY?
Creusabro 4000 QT-HEAVY has a typical yield strength of 930 MPa (135 ksi) and a tensile strength of 1,200 MPa (174 ksi) — stronger than 90% of steel grades. Strength varies by condition: see the 2 listed tempers.
Is Creusabro 4000 QT-HEAVY easy to machine?
Not especially — machinability is rated poor (27/100, worse than 92% of steel grades). Machine with rigid setups and coated carbide or CBN at low feeds/speeds; drilling needs high thrust and coolant, and the material work-hardens locally, so avoid dwelling and prefer plasma/laser cutting plus grinding where possible.
Can Creusabro 4000 QT-HEAVY be welded?
Yes — weldability is rated good (55/100). Weldable with low-hydrogen MMA/MAG/FCAW consumables; carbon equivalent is moderate so no preheat is usually needed up to ~30 mm, above that preheat 100–150 °C, keep interpass ≤250 °C, no post-weld heat treatment (it would soften the plate).
What surface finishes work on Creusabro 4000 QT-HEAVY?
Descale/blast then shop primer or epoxy paint; no anodizing (ferrous). Flame/plasma cut edges should be ground before welding or bending to remove the hardened cut zone.
Can Creusabro 4000 QT-HEAVY be formed, bent or molded?
Cold bendable with bend radius about 3–4×t transverse to rolling direction (better ductility than conventional 400 HB plate); hot forming and full re-quench are not recommended as the dual-phase structure would be lost.
What is the maximum service temperature of Creusabro 4000 QT-HEAVY?
Creusabro 4000 QT-HEAVY is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- Creusabro 4000 — wear resistant steel plate datasheet — Industeel (ArcelorMittal) (2020)
- Creusabro range — welding and processing recommendations — Industeel (ArcelorMittal) (2019)
- ASM Handbook Vol. 1: Properties and Selection — Irons, Steels — ASM International (1990)
- ASTM E140 — Standard Hardness Conversion Tables for Metals — ASTM (2019)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.